W DOC AIRBUS | AMM A320F

Check of the Fuel Quantity Indicating System, When an Inner Tank Indication is Unserviceable

TASK 28-40-00-040-005-A
Check of the Fuel Quantity Indicating System, When an Inner Tank Indication is Unserviceable

WARNING: PUT THE SAFETY DEVICES AND THE WARNING NOTICES IN POSITION BEFORE YOU START A TASK ON OR NEAR:
  • THE FLIGHT CONTROLS
  • THE FLIGHT CONTROL SURFACES
  • THE LANDING GEAR AND THE RELATED DOORS
  • COMPONENTS THAT MOVE.
MOVEMENT OF COMPONENTS CAN KILL OR CAUSE INJURY TO PERSONS AND/OR CAN CAUSE DAMAGE TO THE EQUIPMENT.
Task Summary
Access Test Specific Tools Mhr E/T Nb Men
NOYESNO0.30.31
1. Reason for the Job
MMEL 28-07-01-04A
WING TANK FUEL QUANTITY INDICATION ON THE FUEL SD PAGE
2. Job Set-up Information
 A. Fixtures, Tools, Test and Support Equipment
REFERENCE
QTY
DESIGNATION
No specific
AR
SAFETY BARRIER(S)
No specific
AR
WARNING NOTICE(S)
 B. Referenced Information
REFERENCE
DESIGNATION
TASK 12-11-28-650-007-A
Use of Magnetic Level Indicators (MLI)
TASK 12-32-28-281-001-A
Drain Water Content
TASK 24-41-00-861-002-A
Energize the Aircraft Electrical Circuits from the External Power
TASK 24-41-00-861-002-A-01
Energize the Aircraft Electrical Circuits from the APU
TASK 24-41-00-861-002-A-02
Energize the Aircraft Electrical Circuits from Engine 1(2)
TASK 24-41-00-862-002-A
De-energize the Aircraft Electrical Circuits Supplied from the External Power
TASK 24-41-00-862-002-A-01
De-energize the Aircraft Electrical Circuits Supplied from the APU
TASK 24-41-00-862-002-A-02
De-energize the Aircraft Electrical Circuits Supplied from the Engine 1(2)
TASK 28-00-00-910-001-A
Fuel Safety Procedures
3. Job Set-up
Subtask 28-40-00-941-061-A
A. Safety Precautions
WARNING: OBEY THE FUEL SAFETY PROCEDURES.
   (1) You must obey the fuel safety procedures when you do work on the fuel system (Ref. AMM TASK 28-00-00-910-001).
   (2) Put the SAFETY BARRIER(S) in position.
Subtask 28-40-00-860-056-A
B. Aircraft Maintenance Configuration
   (1) Make sure that the aircraft is refueled for the subsequent flight.
   (2) Energize the aircraft electrical circuits (Ref. AMM TASK 24-41-00-861-002).
4. Procedure
Subtask 28-40-00-040-056-A ** ON A/C NOT FOR ALL
A. Make sure that the Fuel Tank Contains the Correct Quantity of Fuel (and not contamination such as unwanted free water).
   (1) Check for unwanted free water. (Ref. AMM TASK 12-32-28-281-001)
   (2) To make sure that the applicable fuel tank contains the correct quantity of fuel, do one of these subsequent steps:
  • Read the FUEL QTY display on the Multi-Tank Indicator (MTI) 6QT, on the Refuel/Defuel Control Panel 800VU,

    or,

  • Read the applicable MLIs (Ref. AMM TASK 12-11-28-650-007).

Subtask 28-40-00-040-056-C ** ON A/C NOT FOR ALL
A. Make sure that the Fuel Tank Contains the Correct Quantity of Fuel (and not contamination such as unwanted free water).
   (1) Check for unwanted free water. (Ref. AMM TASK 12-32-28-281-001)
   (2) To make sure that the applicable fuel tank contains the correct quantity of fuel, do one of these subsequent steps:
  • Read the FUEL QTY display on the Multi-Tank Indicator (MTI) 6QT, on the Refuel/Defuel Control Panel 800VU,

    or,

  • Read the applicable MLIs (Ref. AMM TASK 12-11-28-650-007) (if the inner tank contains more than 2500 liters of fuel).

Subtask 28-40-00-040-056-F ** ON A/C NOT FOR ALL
A. Make sure that the Fuel Tank Contains the Correct Quantity of Fuel (and not contamination such as unwanted free water).
   (1) Check for unwanted free water. (Ref. AMM TASK 12-32-28-281-001)
   (2) To make sure that the applicable fuel tank contains the correct quantity of fuel, do one of these subsequent steps:
  • Read the FUEL QTY display on the Multi-Tank Indicator (MTI) 6QT, on the Refuel/Defuel Control Panel 800VU,

    or,

  • Read the applicable MLIs (Ref. AMM TASK 12-11-28-650-007) (if the wing tank contains between 2400 and 7000 liters of fuel).

5. Close-up
Subtask 28-40-00-860-059-A ** ON A/C NOT FOR ALL
A. Aircraft Configuration
   (1) De-energize the aircraft electrical circuits (Ref. AMM TASK 24-41-00-862-002).
   (2) Put a WARNING NOTICE(S) in position to tell the flight crew that:
  • the applicable wing tank inner-cell ECAM fuel quantity indication is unserviceable.
   (3) Write an applicable entry in the aircraft technical log.
Subtask 28-40-00-860-059-B ** ON A/C NOT FOR ALL
A. Aircraft Configuration
   (1) De-energize the aircraft electrical circuits (Ref. AMM TASK 24-41-00-862-002).
   (2) Put a WARNING NOTICE(S) in position to tell the flight crew that:
  • the applicable wing tank ECAM fuel quantity indication is unserviceable.
   (3) Write an applicable entry in the aircraft technical log.
Subtask 28-40-00-942-059-A
B. Removal of Equipment
   (1) Make sure that the work area is clean and clear of tools and other items.
   (2) Remove the SAFETY BARRIERS.
   (3) Remove the ground support and maintenance equipment, the special and standard tools and all other items.
[Rev.10 from 2021] 2026.04.02 06:18:03 UTC
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